Machine for stripping oil-cakes.



Patented Sept. 36, 1913.

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INVENTOR M 9 NuHy ATTORNEYS WITNESSES COLUMBIA PLANDGRAPH c0., WASHING-TON, D. c.

T. J. MGNULTY. MACHINE FOR STRIPPING OIL CAKES.

APPLIGATION FILED MAR. 12, 1913.

Patented Sept. 30, 1913.

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WITNESSES I INVENTOR T/Iama-s J 0 /1 4147 ATTORNEYS COLUMBIA PLANOGRAPH 50.,WAsMINdTON. D. r

THOMAS J. MoN JL'IY, or BROGKI-IAVEN, MISSISSIPPI.

MACHINE FOR STRIPPING OIL-CAKES.

Specification of Letters Patent.

Patented Sept. 30, 1913.

. Application filed March 12, 1913. Serial No. 753,738.

intact and subjected to pressure. In ordinary practice the press cloths envelop the opposite flat side and the two ends of the cakes, the ends of the cloth overlapping usually near the center. The cloths adhere very tenaciouslyto the cake after pressure, and must be forcibly stripped off.

It is a design of my invention to provide an improved stripping machinethat will expeditiously remove the cloth without damage either to the cloth or to the cake, and will require a minimum handling by the operator.

It is a further design of my invention to provide a machine, the operation of which will involve no danger to the operator.

The distinguishing features of the invention, and the important structural elements characterizing the preferred embodiment which is illustrated as an example, will be more particularly explained in'the specific description hereinafter to be given.

Reference is to be had to the accompanying drawingsforming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a'front elevation of a stripping machine embodying my vinvention; Fig. 2.is a sectional end view Fig. 3 is a plan view; Fig. 4 is a detail cross sectional view on a larger scale of the stripper shaft; and Figs. 5 and 6 are diagrammatic views in side elevation, indicating the stripping operation.

In constructing the machine in accordance with the illustrated example, any suitable frame 10 is provided, on the top 11 of which may'rise standards 12, having bearings 13 for a stripper shaft 14 having stripping fingers 15, which are adapted to grip the cloth a of an oil cake I). l A table 16 is providedbelow the stripper shaft, and at each side thereof, and between said tables a movable presser device is provided, preferably in the form of a roller 17 parallel with the said shaft. The roller is carried by a yoke 18, having an arm 18 extending at one side and pivoted at its end to a bracket 19 on a crossbar or angle iron 19 secured beneath one of the tables 16. An oppositely projecting arm 18 is provided on the yoke 18 and is connected by a connecting rod 20 to a treadle 21, for moving the presser roller 17 toward and from the stripper shaft.

The stripper shaft may be driven by any suitable means; in the present instance I have illustrated a fast pulley 23 and loose pulleys 22, 22 at opposite sides of the fast pulley. Belts 24, 24 are driven from any suitable source of power, and in practice they consist of a straight and a crossed belt running in opposite directions. The belts are adapted to be shifted by shifting yokes 25, 26, carried by a shifting bar 27 having guided movement in a guide frame 28. The shifting bar 27 ranges from front to rear of the machine above the stripper shaft, and its rear end is pivoted to the upper end of a lever 29 at the back of the machine, fulcrumed as at 29 on any convenient portion of the framework, and the opposite end of the lever is pivoted to a link 30 extending to the front of the machine, beneath the, top 11 of the latter. I

The forwardly projecting end of the link 30 is connected to the upwardly extending arm 31 of a bell crank lever, the forwardly extending arm 32 of which extends toward the connecting rod 20 for actuating the presser roller 17, and said connecting rod has a trip arm 20 projecting beneath the arm 32, the purpose of which arrangement will presently appear. A second treadle 33 is provided, and a connecting rod 34 extends upwardly therefrom to connect with an arm 35 of an angle lever fulcrumed on a bracket 36, or other support, the second arm 37 of said angle lever being'connected with the link 30 by the'same pivot 30 as the arm 31 of the previously mentioned bell crank lever, so that the arms 31, 37 act as a toggle.

The rotation of the stripper shaft in one direction strips the cloth from the cake, the cloth winding on the shaft as it is stripped, and a reverse movement is given the shaft to unwind the cloth. It may be considered that the positions of the belts, in full lines in Fig. 2 as well as the full line positions of the other parts, are the positions for reversing, that is, for unwinding the cloth from the stripper shaft. The dotted positions of the arms 31, 37, the shifting rod 27 and the intermediate connections, are the positions the parts assume for the forward drive of the stripper shaft in stripping.

In practice, an oil cake I) is placed on the tables 16, and so positioned that the overlying portion of the cloth or outside lap thereof, will be in line with the stripper;

shaft, the cake in this position bridging the space between the two tables 16, and lying above the presser roller 17 The treadle 21 is pressed to raise said roller and press the cake against the stripper shaft. In the rotation of the shaft the fingers 15 will firmly grip the cloth a, and strip the same from the cake, the latter running between the rolls toward the opposite end of the machine. As the stripping continues and the left hand end of the cake is reached, a reverse movement willbe given to the cake,

causing it to be returned over the top of the stripper shaft until the second end of the cake is reached, whereupon the cake will be returned beneath the stripper shaft, finally being deposited on the table 16 at the right.

The upward movement of thetreadle 21' for the upward movement of the presser roller will have given the proper shift to the belts for the described stripping movement "of the stripper shaft, owing to the trip arm will drive the fast pulley 23. The strippinghaving been completed, the operator presses his foot on the treadle 33, whereby the upward movement of the connecting rod 34 will raise the arm 35 upwardly, and through the arm 37 pull the link 30 forwardly, restoring these parts to the full line position (Fig. 2) for the reversing of the stripper shaft to unwind the cloth therefrom. he

connecting rod 34 has a weight or weight 7 cup I 34; thereon, which will automatically exert a downward pull on the said connecting rod and restore the parts to the dotted.

line positions by the time the operator has "a'not-h er cake ready for the stripping. Should the parts fail to return automatically and remain in the full line positions, then when the operator again places his footon the tread'le 21, to raise the presser roller 17, the trip 20* will again contact with the bell crank lever 31, 32 and properly shift the drive belts. To give further manual con trol in. case the belt-shifting devices should bind er stick, the shifting bar 27 is provided at its outer end at the front of the machine with a handle 27*, that'may be grasped by the operator. V

In order that the cake when stripped may be finally deposited at either end of the machine, the gripping teeth 15 are made reversible, being for this purpose adapted to be turned in their sockets 38. The teeth areheld in the adjusted position by set screws 39.

It. will be observed that the p'ullon-the cloth is straight with the longitudinal three tion of the cake, and not diagonal or a shear 'pull, so that there is no danger of the cloth tearing. By reason of the special movements given to the cake in the stripping, and the support afforded to it at all steps of the operation, even a broken cake is stripped by mymachine as readily as would be an unbroken one. i V

A further characteristic of "the Operation of the machine is that the cloth does not need to be gripped at the eXt'reme'end, for which reason the operatordoes not need to observe precision in positioning the cake; and besides, the teeth will never engage the cloth twice at thesame points, for which reason the cloth is not injured. Furthermore, I

am enabled to strip the cloth in a condition practically free from particles of cake, and therefore in a conditioh to be immediately delivered again to the press room.

If desired, a conveyer may be provided for carrying off the cakes. I have indicated 7 V a sprocket chain 41, which in practice runs over sprockets,o'ne s ro ket shaft being indicated at 42, and pr'ovide'd 'w'i'th sprockets The rapidity of the operation of the ma- "chine has in practice reduced the stripping period ordinarily require so that the returning of the ,clo'ths to the press operators is more expeditious, resulting in a reduction of the running time of the press, without lessenin the ac'tual pressing period.

A further characteristic of the machine is that there is practically no danger "what 7 ever of the operator being injured, and an additional result that I find in praeticefis that the cloth can be readily stripped from cakes having a ver" high percentage of moisture; wiereas tie stripp'in 'er such cakes is ordinarily difficult.

Referring furtherto Figs. be noted that there is a em arm 44 disposed above and slightly to one side of the stripper shaft 14:, and approximately parallel with the latter. The arm is designed to serve a two-fold purpose: First, it prevents a portion of a broken cake from being thrown back are the stripper shaft as the press cloth is stripped therefr'om, the strip ped fragment of cake engaging the in the turning of the stripper shaft. The second fimction of the arm i to 'constitute a 1 to a, it will guard to keep the operators arm from contacting with the stripper shaft when removing the stripped cake. The guard arm is supported in any suitable manner, there being shown for the purpose, an angle bracket 45, which is secured to a convenient portion of the frame 10. A loose sleeve 46 is fitted on the guard arm to rotate and better carry out the function in an efiicient manner.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent:

In a machine for stripping oil cakes and the like, astripper shaft having cloth-gripping means turning with the shaft to grip the cloth and cause it to wind upon the shaft, means for reversing the movement of the shaft to unwind the cloth, a presser device to press the cake against the shaft for engagement with the gripping means, and means for throwing the reversing means into operation by themovement of said presser device.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

THOMAS J. MONULTY.

Witnesses:

R. S. BUTLER, L. R. JAMns.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, 

